TelomeraseCell Line, TransformedCell AgingTelomereCell Transformation, NeoplasticAntigens, Polyomavirus TransformingCell Transformation, ViralCell DivisionFibroblastsSimian virus 40Cell LineKaryotypingRNACells, CulturedPharmacoepidemiologyLi-Fraumeni SyndromeCyclin-Dependent Kinase Inhibitor p16Subrenal Capsule AssayBreastLiterature, ModernTumor Suppressor Protein p53Epithelial CellsChromosome SegregationPiebaldismStem CellsMelanocytesKeratinocytesTumor Cells, CulturedDNA-Binding ProteinsBias (Epidemiology)Oncogenes5-MethylcytosineOncogene Proteins, ViralTransfectionPapillomavirus E7 ProteinsCell SurvivalCell DifferentiationCell CycleDNARNA, MessengerGenes, p53Retinoblastoma ProteinPhenotypeEpitheliumBase SequenceTumor Suppressor Protein p14ARFChromosomes, Human, Pair 4Clone CellsAntigens, Viral, TumorMutationPapillomaviridaeCell Culture TechniquesGenes, rasEmbryo, MammalianMolecular Sequence DataDNA MethylationChromosomes, HumanChromosomes, Human, Pair 6Time FactorsAneuploidyCyclin-Dependent Kinase Inhibitor p21Cell ProliferationRepressor ProteinsMice, NudeGene ExpressionGenetic Complementation TestPrecancerous ConditionsChromosomes, MammalianChromosome AberrationsMesocricetusAzacitidineBlotting, SouthernBlotting, NorthernGene Expression RegulationBromodeoxyuridineKeratinsNuclear ProteinsGenes, mycCyclinsReverse Transcriptase Polymerase Chain ReactionCell Line, TumorSkinRetroviridaeDNA ReplicationTranscription Factors3T3 CellsModels, BiologicalChromosome MappingImmunohistochemistryCell NucleusGene Expression Regulation, NeoplasticNeoplasmsDNA PrimersBreast NeoplasmsPolymorphism, Restriction Fragment LengthTransduction, GeneticProto-Oncogene ProteinsTranscription, GeneticGene DeletionApoptosis